QUASIBINARY SECTIONS FORMATIO IN THE Ag – Sb – P – Se SYSTEM

The possibility of combining different properties materials within Ag – Sb P Se system prompted the study nature physicochemical interactions in it. main attention was paid to systems based on AgSbP2Se6 with participation stable binary and ternary compounds. It assumed that cross sections involving compounds would be quasi-binary. However, nonquasibinarity Ag2Se Ag7PSe6– proved, which indicated a complex interaction system. Difficulties were caused by formation process synthesis multicomponent mixtures, determination phase composition complicated presence reflexes powder patterns phases at same angles. In this regard, it expedient summarize experimental data This allow establishment quasi-binary, quasi-ternary quasi-quaternary system, aim work.
 established Ag7PSe6 intersects two Ag4P2Se6 AgSbSe2 Sb2Se3 Se. Other samples consist four-phases, each which, addition three compounds, selenium detected. quasiternary quasiquaternary formed following quasibinaries: Ag4P2Se6, AgSbSe2, Se, Sb2Se3, Se.
 section found is also not quasi-binary one (Ag7PSe6 Ag) (Ag4P2Se6 - AgSbSe2). taken into account A refining analysis confirmed above systems. identified twelve, sectionAg2Se quasibinarity four Ag2Se, Ag, AgSbSe2) additionally Sb4(P2Se6)3.
 Thus, seventeen sections. should noted some them known literature. are partial systems, respectively, subsystems So, fact thirteen quaternary established.
 noteworthy compound does form silver-containing exception often final, occasionally intermediate product other